| Zeffy vs King | 10–4 | 71.43% |
| Zeffy vs Nina | 7–6 | 53.85% |
| Zeffy vs Kazuya | 3–8 | 27.27% |
| Zeffy vs Dragunov | 5–3 | 62.50% |
| Zeffy vs Lili | 2–5 | 28.57% |
| Zeffy vs Steve | 3–3 | 50.00% |
| Zeffy vs Reina | 2–3 | 40.00% |
| Zeffy vs Clive | 2–3 | 40.00% |
| Zeffy vs Jin | 4–0 | 100.00% |
| Zeffy vs Bryan | 0–4 | 0.00% |
| Zeffy vs Leroy | 2–2 | 50.00% |
| Zeffy vs Jun | 2–2 | 50.00% |
| Zeffy vs Hwoarang | 1–2 | 33.33% |
| Zeffy vs Devil Jin | 2–1 | 66.67% |
| Zeffy vs Lars | 1–2 | 33.33% |
| Zeffy vs Kuma | 1–2 | 33.33% |
| Zeffy vs Azucena | 3–0 | 100.00% |
| Zeffy vs Anna | 0–3 | 0.00% |
| Zeffy vs Yoshimitsu | 2–0 | 100.00% |
| Zeffy vs Jack-8 | 0–2 | 0.00% |
| Zeffy vs Feng | 2–0 | 100.00% |
| Zeffy vs Zafina | 2–0 | 100.00% |
| Zeffy vs Lidia | 1–1 | 50.00% |
| Zeffy vs Fahkumram | 0–2 | 0.00% |
| Zeffy vs Armor King | 0–2 | 0.00% |
| Zeffy vs Eddy | 0–1 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.